What is Viagra?
Viagra is an effective medicine that relaxes muscles found in the blood vessels walls and increases the flow of blood to specific areas of the body. People buy Viagra online to treat erectile dysfunction, as the Viagra pill is a proven dose to treat ED in men across the world.

Generic Viagra is available with the name sildenafil at a comparatively lesser price, but you may not get the required form and strength in generic medicine. Revatio is another brand name drug of Viagra that helps treat pulmonary arterial hypertension (PAH) and improves the capacity to work out in men and women.

In this article, we will discuss Viagra only. And, we recommend you not to take Revatio while taking treatment with Viagra unless your medical healthcare provider tells you to.

How Does Viagra Work?
Viagra helps blood flow to specific areas that usually help attain an erection within 30 to 60 minutes. In rare cases, it may also take two hours. Remember that if you are in a relaxed mood and sexually aroused, it could start functioning and take effect sooner.

Get in the mood
No matter how effective an impotence agent is, it can never work until you are sexually aroused. If you are going to take Viagra before then, you need to help with the medication and get in the mood.

You may do something sexually stimulating for you to get in the mood, as long as it is not illegal and between consenting adults. To get your juices flowing, you may try:

read some erotica, fantasize
give or take some sensual massage
enjoy some solo pleasure
engage in foreplay by kissing or erogenous play
Eat a light meal beforehand
One may take Viagra with or without some food, but if you like to add up to your energy, try keeping your meal choice light because eating a sizeable high-fat meal can delay the absorption of this drug, meaning it will take longer to take effect.

If you have already taken a large meal, you might need to wait a couple of hours to get enough time for digestion before taking medicine.

Give yourself some time.
Do not just pop the pill and expect to get the erection instantly. Make a plan or give some time to yourself as Viagra is an effective drug, and it will work sooner or later.

In some cases, it can even take four hours before having sexual intercourse, so you need not stress or rush about it.

Before Taking Viagra
You should not use this impotence agent if you are allergic to sildenafil or take nitrates or other medication to treat pulmonary arterial hypertension. While taking treatment with Viagra, if you use nitrate medicine, it can cause a sudden and severe reduction in blood pressure.

Nitrate drug helps treat heart problems or chest pain and may cause a dangerous interaction with Viagra. It includes isosorbide dinitrate, nitroglycerin, and isosorbide mononitrate. Nitrates are also available in some recreational drugs, including amyl nitrate.

To ensure this impotence agent is safe for you, please share your medical history with your medical healthcare provider, especially if you have ever had:

high or low blood pressure;
liver or kidney disease;
heart problems: heart rhythm disorder, coronary artery disease, heart attack, congestive heart failure (CHF), or stroke;
blood cell disorder: multiple myeloma, or sickle cell anemia;
hemophilia, or any other bleeding disorder;
stomach ulcer, retinitis pigmentosa (an eye condition);
Peyronie’s disease, or any other physical deformity condition that demands you to avoid sexual intercourse
How long does Viagra last?
On average, Viagra sustains in your system for two to three hours before its effects start to diminish. Viagra may also last for up to 5 hours or more depending upon your body’s metabolism, your dosage, and other external factors.

On the basis of how your body metabolizes it, you may be able to attain an erection several times with this medicine in your system. Viagra probably would not help you last longer in bed, though. No research proves definitively that this drug can increase how long you can have sexual intercourse.

Viagra may not work again right after you have had sex. Typically, it is not possible to get another erection immediately after ejaculating as your body might not be physically prepared for it. This break is known as the refractory period, and it is more likely to last a few minutes but sometimes may last for a few hours or even days.

What are the side effects of Viagra?
You can avoid Viagra side effects by following the guidelines of your medical healthcare provider and taking the medication as per the prescription. Viagra can cause an allergic reaction that requires immediate medical attention. Signs may include hives, swelling in different body parts, and difficulty breathing.

You need to stop taking this medication if you notice any of the severe side effects of Viagra:

changes in vision or sudden loss of eyesight;
heart attack symptoms such as extreme pain or pressure in the chest, sweating, nausea, pain spreading to your jaw or shoulder;
a painful erection lasting for more than 4 hours, an erection of such an extended period can damage the penis
Other severe side effects of Viagra may include:

irregular heartbeat with shortness of breath;
sudden hearing loss or unusual ringing in the ears;
swelling in your arms, ankles, or feet;
lightheadedness, a sudden feeling like you might pass out;
seizures (or convulsions)
Common Viagra side effects:

dizziness, headache, upset stomach;
flushing with redness, warmth, or tingly feeling;
nosebleeds, runny or stuffy nose;
abnormality in the vision;
back pain, muscle pain; or
sleep problems, including insomnia
Cialis Vs. Viagra
Ingredients: Viagra contains sildenafil, while Cialis contains the medicine tadalafil. Both the drugs belong to the phosphodiesterase type 5 (PDE5) inhibitors family of medications.

Uses
Both Viagra and Cialis are under medical prescription to treat erectile dysfunction (ED) in males 18 years and older. They help in ED treatment by attaining and sustaining an erection when a person is sexually aroused. Both the drug will not work if you are not sexually aroused.

In addition, Cialis also helps treat symptoms existing due to benign prostatic hyperplasia (BPH). The symptoms include an urge to pass urine frequently or urgently, a weak urine flow, or an inability to empty your bladder fully.

Drug forms and Administration
Both Viagra and Cialis come in tablet form for oral use, but the dosage pattern varies.

You take the Viagra pill 30 minutes to four hours before you plan to have sexual intercourse. This medicine helps you keep an erection for up to four hours, and you should not take it more than once a day.

With Cialis, you take the dose at least half an hour before planning the sex. It can help you sustain an erection for up to 36 hours after taking the amount, and you should not take it more than once per day.